Some basic ASpace overrides...

_header_respository.html.erb

<=# plugins/local/frontend/views/shared/_header_repository.html.erb %>
<=# just removes the links to classification %>

<div class="container repository-header">
<div class="navbar">
  <div class="navbar-inner">
    <div class="container">
      <button type="button" class="btn btn-navbar" data-toggle="collapse" data-target=".nav-repository-collapse">
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
      </button>
      <div class="nav-collapse nav-repository-collapse collapse">
        <% if session[:user] and session[:repo_id] %>
          <ul class="nav">
            <li <% if controller_name === "welcome" %>class="active"<% end %>>
              <%= link_to raw('<span class="icon-home"></span>'), :controller => :welcome, :action => :index %>
            </li>
            <li class="dropdown browse-container">
              <a href="#" class="dropdown-toggle" data-toggle="dropdown"><%= I18n.t("actions.browse") %> <b class="caret"></b></a>
              <ul class="dropdown-menu">
                <li><%= link_to I18n.t("accession._plural"), :controller => :accessions, :action => :index %></li>
                <li><%= link_to I18n.t("resource._plural"), :controller => :resources, :action => :index %></li>
                <li><%= link_to I18n.t("digital_object._plural"), :controller => :digital_objects, :action => :index %></li>
                <li class="divider"></li>
                <li><%= link_to I18n.t("subject._plural"), :controller => :subjects, :action => :index %></li>
                <li><%= link_to I18n.t("agent._plural"), :controller => :agents, :action => :index %></li>
                <li><%= link_to I18n.t("location._plural"), :controller => :locations, :action => :index %></li>
                <li><%= link_to I18n.t("event._plural"), :controller => :events, :action => :index %></li>
                <li><%= link_to I18n.t("collection_management._plural"), :controller => :collection_management, :action => :index %></li>
              </ul>
            </li>
            <% if ['update_archival_record', 'update_subject_record', 'update_event_record',
                   'update_agent_record', 'update_location_record'].find {|p| user_can?(p)} %>
              <li class="dropdown create-container">
                <a href="#" class="dropdown-toggle" data-toggle="dropdown"><%= I18n.t("navbar.create") %> <b class="caret"></b></a>
                <ul class="dropdown-menu">
                  <% if user_can?('update_archival_record') %>
                    <li><%= link_to I18n.t("accession._singular"), :controller => :accessions, :action => :new %></li>
                    <li><%= link_to I18n.t("resource._singular"), :controller => :resources, :action => :new %></li>
                    <li><%= link_to I18n.t("digital_object._singular"), :controller => :digital_objects, :action => :new %></li>
                    <li class="divider"></li>
                  <% end %>
                  <% if user_can?('update_subject_record') %>
                    <li><%= link_to I18n.t("subject._singular"), :controller => :subjects, :action => :new %></li>
                  <% end %>
                  <% if user_can?('update_agent_record') %>
                    <li class="dropdown-submenu">
                      <a href="javascript:void(0);"><%= I18n.t("agent._singular") %></a>
                      <ul class="dropdown-menu">
                        <li><%= link_to I18n.t("agent_person._singular"), :controller => :agents, :action => :new, :agent_type => :agent_person %></li>
                        <li><%= link_to I18n.t("agent_family._singular"), :controller => :agents, :action => :new, :agent_type => :agent_family %></li>
                        <li><%= link_to I18n.t("agent_corporate_entity._singular"), :controller => :agents, :action => :new, :agent_type => :agent_corporate_entity %></li>
                        <li><%= link_to I18n.t("agent_software._singular"), :controller => :agents, :action => :new, :agent_type => :agent_software %></li>
                      </ul>
                    </li>
                  <% end %>
                  <% if user_can?('update_location_record') %>
                    <li class="dropdown-submenu">
                      <a href="javascript:void(0);"><%= I18n.t("location._singular") %></a>
                      <ul class="dropdown-menu">
                        <li><%= link_to I18n.t("location._frontend.action.single"), :controller => :locations, :action => :new %></li>
                        <li><%= link_to I18n.t("location._frontend.action.batch"), :controller => :locations, :action => :batch %></li>
                      </ul>
                    </li>
                  <% end %>
                  <% if user_can?('update_event_record') %>
                    <li><%= link_to I18n.t("event._singular"), :controller => :events, :action => :new %></li>
                  <% end %>
                
                </ul>
              </li>
            <% end %>
            <li>
              <%= form_tag(url_for(:controller => :search, :action => :do_search), :method => :get, :class => "navbar-form pull-left") do %>
                <div class="input-append">
                  <input id="global-search-box" type="text" class="span2" placeholder="<%= I18n.t("navbar.search_placeholder") %>" name="q" value="<%= params[:q] %>"/>
                  <div class="btn-group">
                    <button id="global-search-button" class="btn"><span class=" icon-search"></span></button>
                  </div>
                </div>
              <% end %>
            </li>
          </ul>
          <ul class="nav pull-right">
            <% if user_can?('update_archival_record') %>
              <li><%= link_to I18n.t("job._plural"), :controller => :jobs, :action => :index %></li>
            <% end %>

            <li><%= link_to I18n.t("navbar.list_reports"), :controller => :reports, :action => :index %></li>

            <% if Plugins.repository_menu_items.any? {|plugin| has_permission_for_controller?(session, plugin)} %>
              <li class="dropdown plugin-container">
                <a href="#" class="dropdown-toggle" data-toggle="dropdown"><%= I18n.t("navbar.plugins") %> <b class="caret"></b></a>
                <ul class="dropdown-menu">
                  <% Plugins.repository_menu_items.each do |plugin| %>
                    <% if has_permission_for_controller?(session, plugin) %>
                      <li><%= link_to I18n.t("plugins.#{plugin}.label"), :controller => plugin.intern, :action => :index %></li>
                    <% end %>
                  <% end %>
                </ul>
              </li>
            <% end %>

            <li class=" dropdown repo-container">
              <div <% if user_can?('manage_repository') %>class="input-append"<% end %>>
                <span class="inset-label">
                    <span class="repository-label has-popover" data-trigger="hover" data-placement="bottom" data-html='true' data-title="<span class='icon-hdd'></span> <%= CGI::escapeHTML(current_repo['repo_code']) %>" data-content="<%= CGI::escapeHTML(current_repo['name']) %>">
                      <span class="icon-hdd"></span><span class="current-repository-id"><% if current_repo %><%= current_repo['repo_code'] %><% end %></span>
                    </span>
                </span>
                <% if user_can?('manage_repository') || user_can?('transfer_repository') %>
                  <a class="btn dropdown-toggle last" data-toggle="dropdown" href="#"><span class="icon-cog"></span> <span class="caret"></span></a>
                  <ul class="dropdown-menu pull-right">
                    <% if user_can?('manage_repository') %>
                      <li><%= link_to I18n.t("navbar.manage_groups"), :controller => :groups, :action => :index %></li>
                      <li><%= link_to I18n.t("user._frontend.section.manage_access"), :controller => :users, :action => :manage_access %></li>
                      <li><%= link_to I18n.t("navbar.repo_preferences"), :controller => :preferences, :action => :edit, :id => 0, :repo => true %></li>
                    <% end %>
                    <% if user_can?('transfer_repository') && @repositories.length > 1 %>
                      <li><%= link_to I18n.t("repository._frontend.section.transfer"), :controller => :repositories, :action => :transfer, :id => session[:repo_id] %></li>
                    <% end %>
                  </ul>
                <% end %>
              </div>
            </li>
            <% if ArchivesSpaceHelp.enabled? %>
              <li><%= link_to_help :link_opts => {"data-placement" => (session[:user] ? "left" : "bottom")} %></li>
            <% end %>
          </ul>
        <% end %>
      </div><!-- /.nav-collapse -->
    </div>
  </div><!-- /navbar-inner -->
</div>
</div>

my_resources_controller.rb

# plugins/local/frontend/controllers/my_resources_controller.rb
# just adds a default sort param to the index action of the resources_controller
# can do a similar tweak to others, like accessions. 

require Rails.root.join('app/controllers/resources_controller')

class ResourcesController < ApplicationController


  def index
    params["sort"] ||= "user_mtime asc"
    @search_data = Search.for_type(session[:repo_id], params[:include_components]==="true" ? ["resource", "archival_object"] : "resource", params_for_backend_search.merge({"facet[]" => SearchResultData.RESOURCE_FACETS}))
  end

end

plugin_init.rb

# plugins/local/frontend/plugin_init.rb

require_relative 'models/search_result_data'

search_result_data.rb

# plugins/local/frontend/models/search_result_data.rb
# redefines facets, which you can see at:
# https://github.com/archivesspace/archivesspace/blob/master/frontend/app/models/search_result_data.rb#L215-L257


require Rails.root.join('app/models/search_result_data')

class SearchResultData

# this changes what facets are requested for Resource searches. Display order follows the order in the array. 
 def self.RESOURCE_FACETS
   [ "primary_type", "level", "publish", "subjects"]
 end

end

solr.rb

# plugins/local/backend/model/solr.rb
# simply adds a solr param to sort by index (alpha) rather than count. 

class Solr::Query

  
   def to_solr_url
     raise "Missing pagination settings" unless @pagination
     add_solr_param(:"facet.sort", "index") # add the sort
     unless @show_excluded_docs
       add_solr_param(:fq, "-exclude_by_default:true")
     end
     if @show_published_only
       add_solr_param(:fq, "publish:true")
     end
     unless @show_suppressed
       add_solr_param(:fq, "suppressed:false")
     end
     add_solr_param(:facet, "true")
     unless @facet_fields.empty?
       add_solr_param(:"facet.field", @facet_fields)
     end
     if @query_type == :edismax
       add_solr_param(:defType, "edismax")
       add_solr_param(:pf, "four_part_id^4")
       add_solr_param(:qf, "four_part_id^3 title^2 fullrecord")
     end
     Solr.search_hooks.each do |hook|
       hook.call(self)
     end
     url = @solr_url
     # retain path if present i.e. "solr/aspace/select" when using an external
     # Solr with path required
     url.path += "/select"
     url.query = URI.encode_www_form([[:q, @query_string],
     [:wt, @writer_type],
     [:start, (@pagination[:page] - 1) * @pagination[:page_size]],
     [:rows, @pagination[:page_size]]] +
     @solr_params)
     url
   
   end
  
end